MONARCH Lathes USA. "Factory Tour" booklet published 1938 and titled "Features of Monarch Lathes" This is a superb production illustrating all aspects of the Monarch production process from casting and forging, gear cutting through machining, quality checking, wear testing and metallurgy. Includes details of design characteristics, bed-proving procedures, lubrication systems and the testing and inspection department. Probably photographed by Robert Yarnall, responsible for the similar Hendey Factory Tour.